Filters



May e, 1958 J. W. WILKINSON v FILTERS Filed Nov. 3o, 1956 ///a/wey United States Patent FILTERS James W. Wilkinson, Hastings, Mich., assigner to Hastings Manufacturing Company, Hastings, Mich.

Application November 3i), 1956, Serial No. 625,340

11 Claims. (Cl. 210-130) Vwhich is highly eicient and does not become waterlogged.

Third, to provide a filter having these advantages,

the parts of which may be economically produced and` assembled.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 isa fragmentary View mainly in vertical section on a line corresponding to line 1-1 of Fig. 2.

Fig. 2 is an enlarged fragmentary view partially in section on a line corresponding to line 2 2 of Fig. l. p

Fig. 3 is an enlarged fragmentary View in vertical section on a line corresponding to the section line of Fig. 1.

gFig. 4 is a fragmentary side elevation of parts in partially assembledv relation.

In the embodiment of my invention illustrated, the casing comprises a body member l, the bottom 2 of which is provided with an inlet passage 3 and an outlet passage 4. The body member has an outturned flange 5 at its upper end constituting a seat for the flange 6 of the top member 7. The body member is desirably formed as a casting, while the top member is formed as a stamping. The top member has a depending skirt portion 8 provided with an annular seat 9 facing outwardly to receive the gasket 10, which is in sealing engagement with the body member. The top member is secured to the body member byl means of a coupling member 11, details of which are not illustrated as they form no part of my present invention.

The inlet tube 12 is mounted on the bottom in upward relation to the inlet 3 and discharges at the top of the casing. The inlet tube is surrounded lby a raised gasket seat 13 which'is spaced on the tube 12 to provide an outlet 14 opening to the outlet passage 4. The bottom has a sump 15 provided with a drain opening 16.

The removable cartridge comprises the outer upright foraminate wall 17, the inner foraminate wall 18 and the intermediate foraminate wall 19. These walls are concentrically disposed in radially spaced relation, the inner wall 18 being quite closely adjacent to the inlet tube and coacting therewith to provide a discharge, which is in communication with the discharge 14. The intermediate Wall 19 is adjacent to the inner wall 18. p p The top Wall 20 is seamed at 21 to the upper end of the outer upright wall 17 and at 22 to the upper end of the inner wall 18. The outer bottom wall 23is seamed at ice 24 to the lower edge of the outer upright wall 17, and is provided with an upwardly offset gasket seat 25 for the gasket 26 seated upon the gasket seat 13. The inner wall 18 is provided with an extension 27, the upper end of which telescopes into the inner Wall 18 and the lower end of which embraces the upwardly offset gasket seat portion of the outer bottom wall. p

The inner bottom wall 271 rests at its outer edge upon the outer bottom Wall and its inner bottom edge secured to the inner wall by the seam 28. This bottom wall is perforated and it coacts with the outer bottom wall to provide a discharge header4 chamber which opens to the discharge through the slots 29 in the part 2-7.

The outer and intermediate upright walls and the top and inner bottom walls define a chamber for filtering medium 30, which is desirably of uniformly compacted cotton linters having their full, or substantially full, wax content. Such filtering material may be uniformly compacted and is made up of substantially uniform filaments.

The inner and intermediate upright walls are spaced to receive and support the vertically corrugated filter member 31, which is formed of fiberboard like material of uniform density and constitutes a filtering element and coacts with the inner and intermediate walls to provide an inner series of vertical channels'32 and an outer series of vertical channels 33. The outer series of channels serve to lprovide a substantially uniform drainage `or outlet for the filtered material which passes through the filtering medium 30 within the filtering chamber. The

corrugations also serve to provide a relatively large filtering area in the ltering element 31. The inner channels 33 permit a substantially uniform discharge of the filtered material.

In order to provide a relatively free ow of a portion of the filtered material, the cartridge top 29 is provided with an annular series of inlet openings 34 located closely adjacent to but at the outer side of the intermediate Wall. The outer upright'wall is provided with a lining 35 of filtering material which, in addition to serving as a filtering medium, acts to prevent the filtering material 3i) from projecting through the perforations in this outer wall.

'Ihe inner Wall is surrounded by a filtering sheet 36, while the intermediate wall is surrounded by a filtering "sheet 37. The filtering sheet 37 serves a double function of a filtering medium and prohibits the filtering material 32 from entering and clogging the openings in the intermediate wall. The inner bottom wall isY provided with a filtering sheet 3S that serves the double ptupose. I

At its inner edge the top wall 20 is downwardly offset to provide a seat 39 for the gasket 40, which sealingly embraces the inlet tube.

The cover or top 7 has av boss 41 centering the upper end of the coil spring 42. The lower end of the spring 42 engages the thrust collar 43 seated upon the gasket 40 urging it against its seat and also urging the cartridge downwardly upon the gasket 26. By this arrangement the cartridges may be quickly and easily inserted and removed for replacement as occasion may require.

I have illustrated and described my invention in a highly practical embodiment thereof. I have not attempted to illustrate or describe certain embodiments and their adaptations which I contemplate as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus `described the invention, what is claimed as new and,A is desired to be secured by Letters Patent is: I 1. In a filter,.the combination with a closed casing including a bottom having inlet and discharge openings, an inlet tube mounted on the bottom of the casing in communication withthe vinlet opening thereof and discharging at the upper end of the casing, a filter cartridge 'surrounding andremovably associated with said inlet tube and comprising fmgarninate concentric radially spaced outer, inner .and .intermediate .upright walls,-an 'imperfonate outer bottomwwall, a .iorm'inate .innerbottom -Wall .spaced `-from` and. coacting..with said Aouter bottom wall to AAprovidefa v.disdltarge `header openingto` said discharge, a top WlLsaid topw'all Shaving an annularser-ies ofi'inlet openings, at the outer side .of `andadjacent to said intermediate wall, .shcetsof` lltering fabric disposed around said inner andintermediate walls, sheets of ltering fabric Vdisposed onythe linner sides Iof said outer upright Lwall Aand .said .inner .bottom wall, said outer, 'intermediate, top and inner `"bottom walls .de'ning a iiltering medium chamber havingfcoir'ipactedLtibrous fliltering` material therein, .fa vertically corrugated .sleeve vof ltering material disposed betweensaid 'inner I.and y intermediate walls Aand coacting therewith to provide a,p'l`uralityof 4outer `and innerver'ticalpassages.

2. :In `a `tilter, the combination with a closed casing including 'abottom havinginletand discharge openings, an inlet tube 'mounted on the bottom ofthe casing in communication with the 'inlet lopening thereof .and ,dis-

charging at"the"upper `end` of the casing, alter ycartridge .surrounding and removably associated ,with Lsaid 'inlet tube and comprising foraminate concentric Lradially spaced outer, inner .and intermediate upright-walls, an imperforate outer Abottom wall, a foraminate 'inner lbottom wallspaced from and'coacting with said outer bottom wall to provide a` discharge vheader openingl to said discharge, a top wall, :said `top wall having [an annular series of `inlet openings at .the-outer .side 'ofand adjacent to said intermediate wall, sheets of filteringv fabric 4`dis-.

posed around said innerand intermediate walls, `avertically corrugated sleeve of filtering material disposedlbetween said inner and intermediatewa`lls and coacting therewithto provide .a plurality of outerand innervertivcal passages. y Y

3.` In a tilterythe combination with a closed casingincluding `a bottom having inlet and discharge openings and having an upwardly facing gasket 4seat surrounding the discharge opening thereof, an inlet `tube mounted on the bottom of the casing'in communication with the inlet opening thereof andV discharging at the upper'end of the casing, a filter cartridge 'surrounding and removably associated with said inlet tube and comprising foraminate 'concentric `radially spaced outer, inner and intermediate upright walls, an imperforate outer bottom wall, ,a foraminate inner bottom wall' spaced from and coacting with Msa'id-outer bottoml wall to providea discharge header opening tosa'id discharge, a top wall, said top wall having an annular series of inlet openings at'the outerside of and adjacent to said intermediate wall, a vertically corrugated sleeve of filtering material disposed between 'said inner and intermediate walls and coactingtherewith `to provide a plurality of outer and inner vertical` passages, said *top wall and said -outer lbottom wall having outwardly` h-facing gasket seats therein, Itop land bottom gaskets disposed in said seats, the top *gasket lbeing in sealing relationto the -inlet tube, the bottom gasket'being in supported y-sealingrelation to Ssaid gasket s'eat'on the lbottomof said lcasing/and means engaging the 'top gasket for applying yielding `thrnstfthe'reto and to lsaid casing and ltherethrou'ghto said 'ibottom gasket.

`4. lIn a tilter, the combination with a closed casing including a bottom having Vinlet yand discharge openings, an inlet tube mounted -on the "bottom `of 'the casing `in communicationwith the "inlet opening thereof :and -dischargingfat 'theflu'pper 'endpof the casing, a tilter'cartrilge surrounding -and `sremova'bly associated vwith saidiinlet tube fran'd comprising foraminate concentric fradially spaced .,outer, :inneriandeintermediate uprigl'it wdlls, an imperforate `outer lbottom wall, `'a foraminate inner lrbottom :wall spaced from randicoaetingwith` .said louter :bot-

tom wall to #provide `a fdischange `header opening Eto said discharge, a top wall, said inner bottom wall and top wallhaving outwardly facing annular shoulders over which the ends of the intermediate upright member are sleeved, said top wall having an annular series of inlet openings at the outer side of and adjacent to said intermediate wall, a vertically corrugated sleeve of ltering material disposed between said inner and intermediate walls coacting therewith to provide a plurality of outer and inner vertical passages.

5. Ina filter, ,thexcombination with a closed casing including a bottom having inlet and vdischarge openings an inlet tube mounted on the bottom of the casing in communication with the inlet 4opening thereof and discharging at the krupper end .of the casing, a filter cartridge surrounding and removably associated with said inlet tube and comprising foraminate concentric radially spaced outer, inner and intermediate upright walls, a .foraminate bottom wall, a top wall, 4having nletopenings at the outerside of andadjacent to said ,intermediate wall, sheets of ilteringfabric disposed around .said yinner and intermediate walls, sheetsof filtering fabric disposed on the inner sides of `said .outer upright Wall and said linnersbottom wall, said outer, intermediate, top and bottom walls definingl a filtering medium chamber having compacted fibrous filtering material therein, `and a vertifCally corrugated sleeve lof filtering material disposed between said inner and intermediate walls and coacting therewith to Aprovide a plurality of outer and inner verti- .c`a'l passages. s

"6. `In a filter, the combination with a closed casing .ncluding a lbottom having inlet vand discharge openings an Iinlet 'tube'mounted on the bottom of the casing in communication with the inlet opening thereof and dis- '.chargingat the upper end of the casing, a filter cartridge 'surrounding and removably associated with said inlet ttube and .comprising foraminate concentric radially spaced outer, innerand intermediate upright walls, a foraminate bottom wall, a top wall having 'inlet openings at fthe outer .side of and adjacentto said intermediate wall,.said outer, intermediate, top and bottom walls defining a lilteringr medium chamber having compacted fibrous 'filtering material therein, and a vertically corrugated sleeve of filtering material disposed between said inner and intermediate walls and coacting'therewith to provide a Lplura'lity of outer and inner vertical passages.

7. A iilter cartridge comprising 'foraminate concentric radially spaced outer, inner and intermediate upright walls, animperforate outer bottom wa'll, a foraminate inner bottom wall spaced from and coacting with said outer bottom wall to provide a discharge header, a top wall, said top wall'having an'annular series o'f inlet openings atthe` outer side of and adjacent to ysaid intermediate wall, 'sheets of'tiltering fabric disposed around said inner andintermediate walls, sheets of filtering fabric disposed on `the -inner sides ofsaid outer upright wall and said 1innerbottom wall, said outer, intermediate, top and .inner bottom walls defining a tiltering medium chamber Vhaving compacted -brous Vfiltering material therein, and a vertically corrugated sleeve of ltering material disposedbetween `said inner and intermediate walls and coacting Atherewith torprovide a plurality of outer and inner vertical passages.

`8.A filter cartridge `comprising foraminate concentric radially spaced outer, linner and intermediate upright =walls, an 'imperforate outer bottom wall, a foraminate inner bottom wall spaced from and coacting with said outer bottom wa'llto provide a discharge header, a-top wall, said `top -wall having an annular series of inlet open- :ings at the outer sideof vand adjacent to :said intermediate wvall,said outer, intermediate, topfand inner bottom walls defining -a filtering medium chamber having compacted Vbrous filtering material therein, and a vertically corrugated=`sleeve of filtering material disposed between said innerfand intermediate walls and coactingl therewith to -provide 'a plurality of louter and inner vertical passages.

9. A filter cartridge comprising foraminate concentric radially spaced outer, inner and intermediate upright walls, an imperforate outer bottom wall, a foraminate inner bottom wall spaced from and coacting with said outer bottom wall to provide a discharge header, a top wall, said inner bottom wall and top wall having outwardly facing annular shoulders over which the ends of the intermediate upright member are sleeved, said top wall having an annular series of inlet openings at the outer side of and adjacent to Vsaid intermediate wall, said outer, intermediate, top and inner bottom walls dening a filtering medium chamber having compacted fibrous filtering material therein, and a vertically corrugated sleeve of filtering material disposed between said inner and intermediate walls and coacting therewith to provide a plurality of outer and inner vertical passages.

10. A lter cartridge comprising foraminate concentric radially spaced outer, inner and intermediate up right walls, a bottom wall, a top wall, said outer and inner walls being xedly connected to said bottom and top walls, said bottom wall and top wall having outwardly facing annular shoulders over which the ends of the intermediate upright member are sleeved, said outer, intermediate, top and bottom walls defining a filtering medium chamber having compacted fibrous filtering material therein, and a vertically corrugated sleeve of filtering material disposed between said inner and intermediate walls with the bights of its corrugations in supported engagement with and coacting with said inner and intermediate walls to provide a plurality of outer and inner vertical passages.

ll. A filter cartridge comprising foraminate concentric radially spaced outer, inner and intermediate upright walls, a foraminate bottom wall, a top wall, said outer and inner walls being flxedly connected to said bottom and top walls, said top wall having inlet openings at the outer side of and adjacent to said intermediate wall, said outer, intermediate, top and bottom walls defining a filtering medium chamber having compacted fibrous filtering material therein, and a vertically corrugated sleeve of filtering material disposed between said inner and intermediate walls with the bights of its corrugations in supportedl engagement with and coacting with said inner and intermediate walls to provide a plurality of outer and inner vertical passages.

References Cited in the file of this patent UNITED STATES PATENTS 2,612,270 Lewis Sept. 30, 1952 

